Home / 1,617.40-2,423.58-1,039.12

Finding the Fourth Proportional to 1,617.40, 2,423.58 and 1,039.12

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Solution

The fourth proportional to 1,617.40, 2,423.58 and 1,039.12 is: 1,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.40 : 2,423.58 = 1,039.12 : x
  2. Step 2: Convert to fraction form
    1,617.40/2,423.58 = 1,039.12/x
  3. Step 3: Cross multiply
    1,617.40x = 2,423.58 × 1,039.12
  4. Step 4: Simplify right side
    1,617.40x = 2,518,390.45
  5. Step 5: Solve for x
    x = 2,518,390.45/1,617.40
  6. Step 6: Final answer
    x = 1,557.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.